0x01: The number of locked instructions executed
0x02: The number of cycles spent in speculative phase
0x04: The number of cycles spent in non-speculative phase (including cache miss penalty)

RETIRED_CLFLUSH_INSTRUCTIONS

Retired CLFLUSH instructions

all

RETIRED_CPUID_INSTRUCTIONS

Retired CPUID instructions

all

DATA_CACHE_ACCESSES

Data cache accesses

all

DATA_CACHE_MISSES

Data cache misses

all

DATA_CACHE_REFILLS_FROM_L2_OR_SYSTEM

Data cache refills from L2 or system

all

0x01: refill from system
0x02: (S)hared cache state from L2
0x04: (E)xclusive cache state from L2
0x08: (O)wned cache state from L2
0x10: (M)odified cache state from L2
0x1e: All cache states except Invalid

0x01: Number of clocks CPU is active when HTC is active (RevF)
0x02: Number of clocks CPU clock is inactive when HTC is active (RevF)
0x04: Number of clocks when die temperature is higher than the software high temperature threshold (RevF)
0x08: Number of clocks when high temperature threshold was exceeded (RevF)
0x80: Number of correctable and uncorrectable DRAM ECC errors (RevE)

CPU_IO_REQUESTS_TO_MEMORY_IO

CPU/IO requests to memory/IO (RevE)

all

0xa1: Requests Local I/O to Local I/O
0xa2: Requests Local I/O to Local Memory
0xa3: Requests Local I/O to Local (I/O or Mem)
0xa4: Requests Local CPU to Local I/O
0xa5: Requests Local (CPU or I/O) to Local I/O
0xa8: Requests Local CPU to Local Memory
0xaa: Requests Local (CPU or I/O) to Local Memory
0xac: Requests Local CPU to Local (I/O or Mem)
0xaf: Requests Local (CPU or I/O) to Local (I/O or Mem)
0x91: Requests Local I/O to Remote I/O
0x92: Requests Local I/O to Remote Memory
0x93: Requests Local I/O to Remote (I/O or Mem)
0x94: Requests Local CPU to Remote I/O
0x95: Requests Local (CPU or I/O) to Remote I/O
0x98: Requests Local CPU to Remote Memory
0x9a: Requests Local (CPU or I/O) to Remote Memory
0x9c: Requests Local CPU to Remote (I/O or Mem)
0x9f: Requests Local (CPU or I/O) to Remote (I/O or Mem)
0xb1: Requests Local I/O to Any I/O
0xb2: Requests Local I/O to Any Memory
0xb3: Requests Local I/O to Any (I/O or Mem)
0xb4: Requests Local CPU to Any I/O
0xb5: Requests Local (CPU or I/O) to Any I/O
0xb8: Requests Local CPU to Any Memory
0xba: Requests Local (CPU or I/O) to Any Memory
0xbc: Requests Local CPU to Any (I/O or Mem)
0xbf: Requests Local (CPU or I/O) to Any (I/O or Mem)
0x61: Requests Remote I/O to Local I/O
0x64: Requests Remote CPU to Local I/O
0x65: Requests Remote (CPU or I/O) to Local I/O